Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA 6AB7 NOS NIB It measured 60/60 where minimum

It measured 60/60 where minimum (65%) is 40/40 and 100% is 62/62

It has some oxide shedding

top chamfered solid-O getters and two additional vertical support rods for increased rigidity and lowered microphonics

but should work fine

WE HAVE SCORES OF THOUSANDS OF VINTAGE ELECTRONIC PARTS

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA 6AB7 NOS NIB It measured 60/60 where minimumThis matched pair of GE 6SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 67 64 for Tube One and 71 69 for Tube Two where minimum (65%) is 50 50. They have tall bases; side horseshoe getters; copper support rods and great flashing. I have played them in my Radio Craftsmen RC 2 monoblocks and they sound great. They are dead quiet when the volume